This report discusses different perspectives used to consider issues related to the global climate change and issues related to the 1992 U.N. Framework Convention on Climate Change and the 1997 Kyoto Agreement.

This report reviews the role of energy efficiency in federal policies to curb CO2 emissions. In particular, it discusses targets for CO2 reductions, projected energy efficiency impacts, strategies for measuring impacts, and legislative proposals that would affect support for energy efficiency programs.

Negotiations on the Kyoto Protocol to the United Nations Framework Convention on Climate Change (UNFCCC) was completed on December 11, 1997, committing the industrialized nations to specified, legally binding reductions in emissions of six “greenhouse gases.” The Protocol entered into force on February 16, 2005, and its emissions reduction requirements are binding on the 35 industrialized countries that have ratified it; the United States disengaged from the Protocol in 2001 and has not ratified it.

Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.

According to the summary, this report reviews U.S. emissions of greenhouse gases in the contexts both of domestic policy and of international obligations and proposals.

Climate change and greenhouse gas (GHG) emissions have been an issue in the 108th Congress, as they have been over the past decade. Bills directly addressing climate change issues range from those focused primarily on climate change research (H.R. 1578 and S. 1164) to comprehensive emissions cap and trading programs for all six greenhouse gases (S. 139 and H.R. 4067). This report briefly discusses basic concepts on which these bills are based, and compares major provisions of the bills in each of the following categories: climate change research, GHG reporting and registries, and cap and trade programs.

This report discusses global climate change and the possibility that human activities are releasing gases, including carbon dioxide (CO2), at rates that could affect global climate change.

This report reviews the status of energy efficiency and renewable energy legislation introduced during the 109th Congress. Action in the second session has focused on appropriations bills; the first session focused on omnibus energy policy bill H.R. 6, H.R. 3, and several appropriations bills. For each bill listed in this report, a brief description and a summary of action are given, including references to committee hearings and reports. Also, a selected list of hearings on renewable energy is included. This report supplements the tracking of issues that appear in CRS Issue Brief IB10020 and CRS Issue Brief IB10041.

Climate change and greenhouse gas (GHG) emissions are a continuing issue in the 109th Congress. Bills directly addressing climate change issues range from those focused primarily on climate change research to comprehensive emissions cap-and-trade programs. Additional bills focus on GHG reporting and registries, or on power plant emissions of carbon dioxide, as part of wider controls on pollutant emissions. The bills vary in their approaches to climate change issues. This report briefly discusses the basic concepts on which these bills are based and compares major provisions of the bills in each of the following categories: climate change research, technology deployment, GHG reporting and registries, and emissions reduction programs.

Recently projected climate changes could have widespread effects on wildlife species. These effects might be positive or negative, depending on the species. Some effects might include extinction, range shifts, mismatches in phenology (timing of pollination, flowering, etc.), and population changes. If the effects of climate change are widespread, there is uncertainty on how wildlife will adapt. Some suggest that evolution and migration will enable species to adapt, whereas others contend that adaptation will be minimal because of limited habitat, and changes in climate that may occur may rapidly than adaptation can respond.

In December 2007, the parties to the United Nations Framework Convention on Climate Change (UNFCCC) held their 13th annual meeting in Bali, Indonesia, and began the process of working toward an agreement/treaty that would succeed the Kyoto Protocol to the UNFCCC when it expires in 2012. The Protocol includes a mandate for a reduction of greenhouse gas (GHG) emissions by 30 developed/industrialized nations to an average of some 5% below their 1990 levels over the commitment period 2008-2012. The broad array of these issues, briefly discussed in this report, has been described by some as comprising perhaps the most complex negotiations ever undertaken internationally.

At least one recent report and numerous news articles suggest that carbon dioxide (CO2) emissions are rising more rapidly than expected. While CO2 emissions associated with human activities continue to rise -- and may be worthy of alarm because of their influence on climate change -- any short-term comparisons between actual emissions and the Intergovernmental Panel on Climate Change (IPCC) scenarios miss the mark. This report analyzes this issue and the issues associated with IPCC scenarios and trajectories. It also describes the importance of monitoring CO2 emissions and analyzing the factors and forces behind increasing CO2 emissions.